Aaa that's OK! I think it's fair to tag it as BL given the content, even crushes etc should count I think...
I mean, I also tag my own one-sided yuri romances as yuri haha
I just think is the 'love' part of the 'boys' love' that can make it feel a little funny when darker stuff gets tagged with it haha
I think this VN is really pretty, the art is truly gorgeous. Thank you for sharing it!